Update TypeScript to latest stable version

TypeScript has been updated to the latest stable version. Our standard
module TypeScript configuration has been brought over from the module
template as well, including a separate configuration file for
production builds (as opposed to the root file used for things like
tests).

A `build:clean` has been added as well, for consistency with the module
template.

package.json

@@ -27,7 +27,8 @@
     "dist/"
   ],
   "scripts": {
-    "build": "tsc",
+    "build": "tsc --project tsconfig.build.json",
+    "build:clean": "rimraf dist && yarn build",
     "buildTest": "yarn build && browserify test/index.js -o test/bundle.js",
     "lint": "yarn lint:eslint && yarn lint:misc --check",
     "lint:eslint": "eslint . --cache --ext js,ts",
@@ -54,8 +55,9 @@
     "eslint-plugin-prettier": "^4.2.1",
     "prettier": "^2.7.1",
     "prettier-plugin-packagejson": "^2.3.0",
+    "rimraf": "^3.0.2",
     "testem": "^3.4.2",
-    "typescript": "^4.3.4"
+    "typescript": "^4.8.4"
   },
   "engines": {
     "node": ">=14.0.0"

src/index.ts

@@ -1,8 +1,8 @@
-type EncryptionResult = {
+interface EncryptionResult {
   data: string;
   iv: string;
   salt?: string;
-};
+}
 
 /**
  * Encrypts a data object that can be any serializable value using
@@ -169,10 +169,9 @@ export function serializeBufferFromStorage(str: string): Uint8Array {
  */
 export function serializeBufferForStorage(buffer: Uint8Array): string {
   let result = '0x';
-  const len = buffer.length || buffer.byteLength;
-  for (let i = 0; i < len; i++) {
-    result += unprefixedHex(buffer[i]);
-  }
+  buffer.forEach((value) => {
+    result += unprefixedHex(value);
+  });
   return result;
 }
 

tsconfig.build.json

@@ -0,0 +1,12 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "declaration": true,
+    "inlineSources": true,
+    "noEmit": false,
+    "outDir": "dist",
+    "rootDir": "src",
+    "sourceMap": true
+  },
+  "include": ["./src/**/*.ts"]
+}

tsconfig.json

@@ -1,16 +1,16 @@
 {
   "compilerOptions": {
-    "declaration": true,
     "esModuleInterop": true,
-    "inlineSources": true,
+    "exactOptionalPropertyTypes": true,
+    "forceConsistentCasingInFileNames": true,
     "lib": ["DOM", "ES2020"],
     "module": "CommonJS",
-    "moduleResolution": "Node",
-    "outDir": "dist",
-    "rootDir": "src",
-    "sourceMap": true,
+    "moduleResolution": "node",
+    "noEmit": true,
+    "noErrorTruncation": true,
+    "noUncheckedIndexedAccess": true,
     "strict": true,
-    "target": "ES2017"
+    "target": "es2017"
   },
-  "include": ["src/**/*.ts"]
+  "exclude": ["./dist/**/*"]
 }

yarn.lock

@@ -4099,10 +4099,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^4.3.4:
-  version "4.3.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.4.tgz#3f85b986945bcf31071decdd96cf8bfa65f9dcbc"
-  integrity sha512-uauPG7XZn9F/mo+7MrsRjyvbxFpzemRjKEZXS4AK83oP2KKOJPvb+9cO/gmnv8arWZvhnjVOXz7B49m1l0e9Ew==
+typescript@^4.8.4:
+  version "4.8.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.8.4.tgz#c464abca159669597be5f96b8943500b238e60e6"
+  integrity sha512-QCh+85mCy+h0IGff8r5XWzOVSbBO+KfeYrMQh7NJ58QujwcE22u+NUSmUxqF+un70P9GXKxa2HCNiTTMJknyjQ==
 
 umd@^3.0.0:
   version "3.0.3"